@misc{indiciae4c90d078c14b,
  title = {Monte Carlo source model for photon beam radiotherapy: photon source characteristics.},
  author = {Michael K Fix and Paul J Keall and Kathryn Dawson and Jeffrey V Siebers},
  year = {2004},
  doi = {10.1118/1.1803431},
  url = {https://pubmed.ncbi.nlm.nih.gov/15587664/},
  note = {Source identifier: 15587664}
}